EP 0579437 A2 19940119 - Coated DFB semiconductor laser for use in analog optical fiber communication system.
Title (en)
Coated DFB semiconductor laser for use in analog optical fiber communication system.
Title (de)
Beschichtete DFB-Halbleiterlaser für Anwendung in einem analogen optischen Faserkommunikationssystem.
Title (fr)
Laser à semi-conducteur du type DFB revêtu pour utilisation dans un système de communication analogue par fibre optique.
Publication
Application
Priority
US 91628292 A 19920717
Abstract (en)
We have discovered that the yield of DFB lasers (10) suitable, e.g., for use in AM CATV systems (30) can be substantially increased if the lasers have a back facet (16) with a higher reflectivity (>80%, preferably >90%) HR coating (18) thereon than is conventional (e.g., SIMILAR 65%). Exemplary currently preferred embodiments of the invention comprise a three-pair stack of lambda /4 yttrium-stablized zirconia/Si having about 95% reflectivity. <IMAGE>
IPC 1-7
IPC 8 full level
H01S 5/00 (2006.01); H01S 5/12 (2021.01); H01S 5/06 (2006.01); H01S 5/028 (2006.01)
CPC (source: EP US)
H01S 5/12 (2013.01 - EP US); H01S 5/028 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0579437 A2 19940119; EP 0579437 A3 19940209; EP 0579437 B1 19970319; DE 69308945 D1 19970424; DE 69308945 T2 19970828; JP 3146225 B2 20010312; JP H06209144 A 19940726; US 5285468 A 19940208
DOCDB simple family (application)
EP 93305293 A 19930706; DE 69308945 T 19930706; JP 19387193 A 19930712; US 91628292 A 19920717